Now that the date and time have been set for the Packers second-round playoff game at San Francisco — it’ll be late afternoon Saturday, Jan. 12, if they beat the Vikings — there’s no reason for Green Bay fans not to lock in their tickets to see “Shrek the Musical” at the Weidner Center. Curtain times are 3 and 7:30 p.m. Sunday, Jan. 13. (Until last Sunday it was possible the Pack could play on either day, or even host a game in Green Bay that weekend.) More on the musical, and your ticket options.